This part, known as the ignition coil , is a vital electrical component in the ignition system of JAC GS3 and GA4 engines (2018-2023 models). Its primary function is to boost the low voltage (12 volts) coming from the battery to a very high voltage (tens of thousands of volts). This high voltage is then transmitted through the coil wire to the spark plug to generate the powerful spark needed to ignite the air-fuel mixture inside the cylinder.
If the engine experiences noticeable misfiring or sputtering, especially during acceleration, or if there is difficulty starting it, or if the Check Engine Light comes on with fault codes indicating a "misfire code", this often indicates damage to the ignition coil of that cylinder.
⚠️ Important Notice: Please ensure the part matches your vehicle's chassis number before purchasing or after ordering the product.